Programming external/custom NRF52832 board using NRF52-DK

[Li]

Hi All,

We are trying to flash our custom NRF52832 board using NRF52-DK+nrf studio. With the same setup that's suggested by devzone.nordicsemi.com/.../

However, from the nrf studio, we can never see the external board (nrf5x programming menu item is greyed out).

We've also tried to using a j-link/jtag but were still unable to see the external board.

We've tested the power supply on the custom board while connecting it to the DK board (2.8v, required 3.3v). Don't know if this could be the problem?

Thanks a lot!

L.

[Matt]

I did not explain myself too clearly in the last post :(

I have bootloader, my app and the softdevice flashed into the PCA10040 board. When I launch nRF go studio I can see the 3 regions there.

Then I close the nRF go studio, but keep the PCA10040 powered up.

Next I connect my external board to the PCA10040 using the wiring as shown in your diagram, and then power up the external board.

Launch nRF go studio and select the same segger device (remember we are still using the same segger/JLink OB for flashing/debugging/tracing) and I see only 2 regions, and I know this is correct as I never flashed the bootloader into the external board before.

[Li]

Thanks Matt! Problem solved!